Amid increased Russian aggression, including the Kremlin's unveiling a new "Satan 2" nuclear missile, NATO forces announced on Oct. 27 that they were increasing deployments of troops to nations most likely to suffer an attack if Russia goes on the offensive.

A Romanian soldier of the 33rd Mountain Battalion Posada fires a semi-auto PKM while conducting a simulated attack during exercise Combined Resolve VII on Sept. 11, 2016. (Photo and cutline: U.S. Army Spc. Nathaniel Nichols)

Russia has consolidated its military control and NATO believes it has 330,000 troops massed near Moscow. NATO has described its new deployments as a measured response. NATO's new deployments consist of only about 4,000 soldiers.

The alliance will send a previously agreed upon four multinational battalions to its borders with Russia. A German-led battalion is headed to reinforce Lithuania, a Canadian-led battalion is reporting to Latvia, a British-led battalion is deploying to Estonia, and a U.S.-led battalion is protecting Poland. Most of the forces will arrive at their destinations in 2017.

U.S. Soldiers with 2nd Cavalry Regiment master the Rough Terrain Run task during the European Best Sniper Squad Competition at the 7th Army Training Command's, Grafenwoehr Training Area, Bavaria, Germany, Oct. 26, 2016. (Photo and cutline: U.S. Army Visual Information Specialist Gertrud Zach)

Britain had originally pledged 650 men for the battalion in Estonia, enough for a headquarters and a few companies of frontline fighters. But the British Secretary of State for Defence, Sir Michael Fallon, announced on Oct. 26 that Britain would deploy 800 troops instead. Those 800 soldiers will sport tactical drones and Challenger 2 main battle tanks.

All of the NATO battalions being deployed are made up of multinational forces led by a battalion headquarters from a single nation, according to IHS Jane's Defence Weekly. The U.S.-led battalion going to Poland is the largest force planned in the agreement.

The U.S. also agreed to a deal with Norway that calls for 330 Marines to deploy to that country. The Marines have previously cooperated with Norway in NATO training exercises set in that country, says CNN.

America has pledged $3.4 billion to increasing defensive measures in Europe in 2017. A portion of the money will go to staging more military equipment near vulnerable NATO areas.

All of this activity comes amid continuously heightening tensions in Europe. Russia has continued to invest heavily in military infrastructure and exercises despite tightening budgets in Moscow.